So.....its been a few months now since we've been able to AAC on our powerbooks. In my opinion, a 128kbps AAC file does not sound as full as a 160 kbps MP3 file. We played a file of one song from each codec, as well as straight from the CD, and the AAC file sounded (to paraphrase neil young) like having ice cubes gushing out at you in the shower. Tinnier, thinner, and cold. But that's just me. The MP3 sounded close to the warmth of the CD. What are other people doing? Are we all using Apple's recommended 128 bit rate AAC encoding? Or something different? How are you balancing quality against file size? Cheers, etc.